[INFO] crate ipv8 0.1.0 is already in cache
[INFO] extracting crate ipv8 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/ipv8/0.1.0
[INFO] extracting crate ipv8 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ipv8/0.1.0
[INFO] validating manifest of ipv8-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ipv8-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ipv8-0.1.0
[INFO] finished frobbing ipv8-0.1.0
[INFO] frobbed toml for ipv8-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ipv8/0.1.0/Cargo.toml
[INFO] started frobbing ipv8-0.1.0
[INFO] finished frobbing ipv8-0.1.0
[INFO] frobbed toml for ipv8-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ipv8/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ipv8-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ipv8/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] b0f44ba39efc07c8efd33af3ef968b25aefb71e532d381d125cd7c12fe81cc29
[INFO] running `"docker" "start" "-a" "b0f44ba39efc07c8efd33af3ef968b25aefb71e532d381d125cd7c12fe81cc29"`
[INFO] [stderr]    Compiling ipv8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `config`
[INFO] [stderr]  --> src/ipv8.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   config: Config,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `"docker" "inspect" "b0f44ba39efc07c8efd33af3ef968b25aefb71e532d381d125cd7c12fe81cc29"`
[INFO] running `"docker" "rm" "-f" "b0f44ba39efc07c8efd33af3ef968b25aefb71e532d381d125cd7c12fe81cc29"`
[INFO] [stdout] b0f44ba39efc07c8efd33af3ef968b25aefb71e532d381d125cd7c12fe81cc29
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ipv8/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 160d55d193a0bea1eea3998768456c75ce6cafe791c843f1b3da7c90f8cd43e8
[INFO] running `"docker" "start" "-a" "160d55d193a0bea1eea3998768456c75ce6cafe791c843f1b3da7c90f8cd43e8"`
[INFO] [stderr]    Compiling ipv8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `config`
[INFO] [stderr]  --> src/ipv8.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   config: Config,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "160d55d193a0bea1eea3998768456c75ce6cafe791c843f1b3da7c90f8cd43e8"`
[INFO] running `"docker" "rm" "-f" "160d55d193a0bea1eea3998768456c75ce6cafe791c843f1b3da7c90f8cd43e8"`
[INFO] [stdout] 160d55d193a0bea1eea3998768456c75ce6cafe791c843f1b3da7c90f8cd43e8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ipv8/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] a94c03e86ecb4c01ba9078711c40e79ddf7b0ffce64d42c16dae5301f4e8e573
[INFO] running `"docker" "start" "-a" "a94c03e86ecb4c01ba9078711c40e79ddf7b0ffce64d42c16dae5301f4e8e573"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ipv8-4626e3911f6a7d8b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ipv8
[INFO] [stderr] error[E0659]: `ipv8` is ambiguous (name vs any other name during import resolution)
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ipv8::IPv8;
[INFO] [stderr]   |     ^^^^ ambiguous name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `ipv8` could refer to an extern crate passed with `--extern`
[INFO] [stderr]   = help: use `::ipv8` to refer to this extern crate unambiguously
[INFO] [stderr] note: `ipv8` could also refer to the module defined here
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod ipv8;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   = help: use `crate::ipv8` to refer to this module unambiguously
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a94c03e86ecb4c01ba9078711c40e79ddf7b0ffce64d42c16dae5301f4e8e573"`
[INFO] running `"docker" "rm" "-f" "a94c03e86ecb4c01ba9078711c40e79ddf7b0ffce64d42c16dae5301f4e8e573"`
[INFO] [stdout] a94c03e86ecb4c01ba9078711c40e79ddf7b0ffce64d42c16dae5301f4e8e573